PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-21:42:40
G02     200.7          25.3               17.0 +/-    1.40      33.0 +/-    1.40  0.170 / 0.430
G06     167.7          59.1               14.8 +/-    0.88      16.9 +/-    0.88  0.240 / 0.440
G13     224.5          10.4               17.2 +/-    2.64      47.5 +/-    2.64  0.050 / 0.130
G17     21.8           59.3               12.2 +/-    0.31      13.9 +/-    0.31  0.040 / 0.110
G19     331.3          70.0               11.8 +/-    0.60      12.5 +/-    0.60  0.070 / 0.180
G24     307.0          32.5                9.9 +/-    1.69      16.4 +/-    1.69  0.070 / 0.190
G28     92.7           37.1               12.7 +/-    0.92      19.4 +/-    0.92  0.090 / 0.120
G30     157.3          10.1               15.0 +/-    4.44      41.7 +/-    4.44  0.100 / 0.130